Funding for this research was provided by:
National Natural Science Foundation of China (81600833)
Natural Science Foundation of Guangxi Province (2016GXNSFAA380168)
Article History
Received: 8 September 2018
Accepted: 22 October 2019
First Online: 4 November 2019
Ethics approval and consent to participate
: The current study was approved by the Regional Ethical Review Board of Guangxi Medical University (#20160311–3).
: Not applicable.
: The authors declare that they have no competing interests.